<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加功能区 -->
      <el-row :gutter="15">
        <!-- 搜索框 -->
        <el-col :span="9">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <!-- 添加按钮 -->
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="ID"></el-table-column>
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <!-- 状态 -->
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-tooltip
              effect="dark"
              :content="scope.row.mg_state ? '关闭' : '开启'"
              placement="right"
            >
              <el-switch
                v-model="scope.row.mg_state"
                @change="userStateChanged(scope.row)"
              ></el-switch>
            </el-tooltip>
          </template>
        </el-table-column>
        <!-- 操作 -->
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            >
            </el-button>
            <!-- 删除 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUser(scope.row.id)"
            >
            </el-button>
            <!-- 分配角色 -->
            <el-tooltip effect="dark" content="分配角色" placement="top">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[3, 5, 8, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
        status-icon
      >
        <el-form-item label="用户名:" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码:" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="手机:" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
        <el-form-item label="邮箱:" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户信息对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!-- 内容区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名:">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="手机:" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
        <el-form-item label="邮箱:" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
      </el-form>
      <!-- 按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="closeRoleDialog"
    >
      <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色：{{ userInfo.role_name }}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolseList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'User',
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const resEmail = /^([a-zA-Z0-9_-])+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/
      if (resEmail.test(value)) {
        // 合法邮箱
        return callback()
      }
      callback(new Error('请输入合法邮箱'))
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const resMobile = /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/
      if (resMobile.test(value)) {
        // 合法手机号
        return callback()
      }
      callback(new Error('请输入合法手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前页码
        pagenum: 1,
        // 每页显示数据条数
        pagesize: 5
      },
      // 用户列表
      userList: [],
      // 获取的数据条数
      total: 0,
      // 添加对话框的显示与隐藏
      addDialogVisible: false,
      // 修改对话框的显示与隐藏
      editDialogVisible: false,
      // 分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 添加用户的表单区域
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名长度在3 ~ 10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码长度在6 ~ 15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 查询到的用户对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入用户邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入用户手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色列表
      rolseList: [],
      // 选中的ID值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 获取列表数据
    async getUserList() {
      const { data: res } = await this.$http.get('/users', { params: this.queryInfo })
      // 数据获取失败
      if (res.meta.status !== 200) {
        return this.$message({
          type: 'error',
          message: '获取列表失败!',
          center: true
        })
      }
      // 数据获取成功
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关状态的改变
    async userStateChanged(userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      // 失败提示
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message({
          type: 'error',
          message: '更新状态失败!',
          center: true
        })
      }
      // 成功提示
      this.$message({
        type: 'success',
        message: '更新状态成功!',
        center: true
      })
    },
    // 监听添加对话框关闭事件
    addDialogClosed() {
      // 重置表单
      this.$refs.addFormRef.resetFields()
    },
    // 添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // 预校验
        if (!valid) return ''
        // 发起添加用户的请求
        const { data: res } = await this.$http.post('users', this.addForm)
        // 添加失败提示
        if (res.meta.status !== 201) {
          return this.$message({
            type: 'error',
            message: '添加用户失败!',
            center: true
          })
        }
        // 添加成功提示
        this.$message({
          type: 'success',
          message: '用户添加成功!',
          center: true
        })
        // 关闭添加表单
        this.addDialogVisible = false
        // 刷新表单
        this.getUserList()
      })
    },
    // 展示编辑用户信息的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      // 失败提示
      if (res.meta.status !== 200) {
        return this.$message({
          type: 'error',
          message: '获取用户信息失败!',
          center: true
        })
      }
      // 成功
      this.editForm = res.data
      // 打开修改对话框
      this.editDialogVisible = true
    },
    // 监听修改对话框关闭事件
    editDialogClosed() {
      // 重置表单
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        // 预校验
        if (!valid) return ''
        // 发起修改用户的请求
        const { data: res } = await this.$http.put(`users/${this.editForm.id}`, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        // 修改失败提示
        if (res.meta.status !== 200) {
          return this.$message({
            type: 'error',
            message: '修改用户信息失败!',
            center: true
          })
        }
        // 关闭修改对话框
        this.editDialogVisible = false
        // 成功提示
        this.$message({
          type: 'success',
          message: '修改用户信息成功!',
          center: true
        })
        // 刷新列表
        this.getUserList()
      })
    },
    // 删除用户
    async removeUser(id) {
      const confirmResult = await this.$confirm('确定删除该用户?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 取消删除提示
      if (confirmResult !== 'confirm') {
        return this.$message({
          type: 'info',
          message: '已取消删除',
          center: true
        })
      }
      // 请求删除
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        // 删除失败提示
        return this.$message({
          type: 'error',
          message: '删除失败!',
          center: true
        })
      }
      // 删除成功提示
      this.$message({
        type: 'success',
        message: '删除成功!',
        center: true
      })
      // 刷新列表
      this.getUserList()
    },
    // 展示分配角色对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message({
          type: 'error',
          message: '获取角色列表失败!',
          center: true
        })
      }
      this.rolseList = res.data
      // 显示对话框
      this.setRoleDialogVisible = true
    },
    // 分配角色
    async saveRoleInfo() {
      // 判断是否选了角色
      if (!this.selectedRoleId) {
        return this.$message({
          type: 'error',
          message: '请选择要分配的角色!',
          center: true
        })
      }
      // 发起请求
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        id: this.userInfo.id,
        rid: this.selectedRoleId
      })
      // 失败提示
      if (res.meta.status !== 200) {
        return this.$message({
          type: 'error',
          message: '分配角色失败!',
          center: true
        })
      }
      // 成功
      this.$message({
        type: 'success',
        message: '分配角色成功!',
        center: true
      })
      // 刷新列表
      this.getUserList()
      // 关闭对话框
      this.setRoleDialogVisible = false
    },
    // 分配角色对话框关闭事件
    closeRoleDialog() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped></style>
